I wanted to chime in that I found that link helpful! I'd wondered why I didn't relate with spoon theory in the past. Spoon theory seems to apply for me only when I'm near capacity and don't have much slack (in the vein of https://www.lesswrong.com/posts/yLLkWMDbC9ZNKbjDG/slack). In those cases, I definitely notice that I will crave downtime, especially if I've had a lot of social activities. If I'm below 75% capacity, I think the momentum model best describes my situation. So if I could spend a couple more hours studying a new concept, working on a side project, or even just chores and life maintenance, it doesn't use up any of my spoons--I just have to put some effort in and collect the momentum to do more.
